Second seed Victoria Azarenka, Czech player Eva Birnerova and Serbian 16th seed Jelena Jankovic all donned white leggings for the opening day of play, though it was unclear whether it was a fashion choice, or a way of keeping warm as temperatures in SW19 failed to reach the highs of previous years.
Fashion expert Nick Ede said: "It could be a bit of both, but it will be an emerging new trend.
"I think the leggings will start becoming not only sports accessories but ones people start wearing as a cross over - very sports luxe!"
The All England Club is no stranger to fashion during the Championships, he said, and this year will be no different.
"When you think of Wimbledon you automatically think pristine whites, wedges and sundresses.
"This summer white is the colour to be seen in so I think we can really expect to see some fabulous outfits from the fashion elite, both spectators and players, at Wimbledon this year."
But the choice of leggings could be down to the cool, grey weather that dominated the first day of play, as temperatures hovered around 16 and 17 degrees.
Pippa Middleton sported a pale blue Sandro dress and blue blazer when she appeared in the Royal Box today, while Caroline Wozniacki appeared to be a wearing a Stella McCartney-designed top to warm up.
Andy Murray, who made it through his first round match against Benjamin Becker unscathed, sported the name of the Royal Marsden Cancer Charity on his sleeve.
His good friend and British Davis Cup team-mate Ross Hutchins, who watched from the Royal Box today, is receiving chemotherapy there.